This essay on Green Calvinism presents a side of Calvinism that is hidden by its severe theology and reputation for grim somberness. The author reveals an environmental activism that geographically coincides with Calvinist territory in Europe and New England and reveals that through a deep suspicion of human nature a passionate preference for nature shines through. Within his deep study of several related movements and ideologies, the author concludes that nature remains a cultural focus on our moral compass and our language remains shaped by ecological holism.